body {
  padding: 0;
  margin: 0;
  overflow: hidden;
  background: url("./images/bgtu.png") center center no-repeat #4281db;
  background-size: 150% 150%;
  -webkit-app-region: drag;
}
#app {
  width: 80%;
  height: 50%;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  text-align: center;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.loading,
.fail {
  width: 100%;
}
.zituLogo {
  width: 40%;
  height: auto;
  animation: logoAn 2s linear forwards;
  animation-delay: 0;
  opacity: 0;
}
.loading {
  display: inline-block;
  animation: qdAn 3s linear forwards;
  animation-delay: 0.4s;
  opacity: 0;
}
.sport {
  width: 100%;
  margin-top: 3%;
}
.sport span {
  display: inline-block;
  width: 0.35rem;
  height: 0.35rem;
  background: #fff;
  border-radius: 100%;
  animation: gif 1.4s infinite linear;
  opacity: 0;
}
.sport .l1 {
  animation-delay: 0;
}
.sport .l2 {
  animation-delay: 0.1s;
}
.sport .l3 {
  animation-delay: 0.15s;
}
.sport .l4 {
  animation-delay: 0.2s;
}
@keyframes logoAn {
  0% {
    transform: translateY(8%);
    opacity: 0;
  }
  40% {
    transform: translateY(-2%);
    opacity: 100;
  }
  45% {
    transform: translateY(-1%);
    opacity: 100;
  }
  100% {
    transform: translateY(0%);
    opacity: 100;
  }
}
@keyframes qdAn {
  0% {
    transform: translateY(10%);
    opacity: 0;
  }
  40% {
    transform: translateY(-2%);
    opacity: 100;
  }
  45% {
    transform: translateY(-1%);
    opacity: 100;
  }
  100% {
    transform: translateY(0%);
    opacity: 100;
  }
}
@keyframes gif {
  25% {
    transform: translateX(5000%);
    opacity: 0;
  }
  30% {
    transform: translateX(400%);
    opacity: 100;
  }
  50% {
    transform: translateX(0);
    opacity: 100;
  }
  70% {
    transform: translateX(-400%);
    opacity: 100;
  }
  75% {
    transform: translateX(-2000%);
    opacity: 0;
  }
}
